3Com 4800G Getting Started Manual page 9

Rear Panel
Power Supply System
Cooling System
LEDs
Table 4 LEDs on the front panel of the Switch 4800G 24-Port
LED Mark Status
Mode LED Mode Speed
Power LED PWR
(3) Console port
(5) Power LED
(7) LED for extended module slot 1
(9) Mode LED
Figure 3 Rear panel of the Switch 4800G 24-Port
(1) (1)
(1) AC power socket
(3) Grounding screw
(5) Extended module slot 2
The Switch 4800G 24-Port can adopt AC input, or 12 V RPS input, or both to
provide backup. Only the recommended RPS can be used.
AC power input
■
Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz
RPS input
■
Rated voltage range: 10.8 VDC to 13.2 VDC
The Switch 4800G 24-Port is equipped with four fans for heat dissipation.
For descriptions about LEDs, see Table 4. You can switch the Mode LED display
mode between speed and duplex by pressing the Mode button on the panel.
Solid green
Duplex Solid yellow
Solid green
Flashing green (1 Hz)
Solid red
Flashing yellow (1 Hz)
OFF
Switch 4800G 24-Port
(4) 7-segment digital LED
(6) RPS LED
(8) LED for extended module slot 2
(10) Mode button
(2) (2)
(3) (3)
(4) (4)
(2) RPS port
(4) Extended module slot 1
Description
Rate of the port
Duplex mode of the port
The switch is started normally.
The system is running a power-on
self-test (POST).
The system fails the POST or a power
failure occurs.
Some ports fail a POST or a port
failure occurs.
The power is disconnected.
9
(5) (5)